Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Temperature or pressure measurement
Patent
1989-08-14
1990-08-21
Lechert, Jr., Stephen J.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Temperature or pressure measurement
376245, 376285, 376258, 73 11, G21C 1700
Patent
active
049504479
ABSTRACT:
A snubber monitoring system is provided for a nuclear power plant wherein the snubbers are disposed at various locations within a plant containment structure to support piping and equipment rigidly against seismic and vibratory loading while permitting thermal expansion and contraction thereof. The system includes displacement sensing means and temperature sensing means coupled to each of the snubbers to generate continuous snubber displacement and pipe and equipment temperature signals.
A sensor data highway system has cable connected data collectors disposed within the plant containment to collect the snubber sensor signals. A receiver and a programmed computer system are located outside the containment to process the snubber displacement and pipe and equipment temperature signals to provide substantially continuous snubber monitoring. A data highway cable extends through the containment to couple the signal collectors to the receiver and computer system.
The sensor signals are processed to detect snubber failures in any of a plurality of failure modes and in any of a plurality of plant operating modes. A historic record is created for snubber operating and failure data.
REFERENCES:
patent: 4082610 (1978-04-01), Matthews
patent: 4550589 (1985-11-01), Wright, Jr.
Bhat Nina
Lechert Jr. Stephen J.
Possessky E. F.
Westinghouse Electric Corp.
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